Improvement in three-way cocks



P. S. PHASE THREE WAY COOK No. 48,430. Patented June 27, 1865.

UNITED STATES PATENT OFFICE.

F. S. PEASE, OF BUFFALO, NEW YORK.

IMPROVEMENT IN THREE-WAY oocKs.

Specification forming part of Letters Patent No. 48,4 30, dated June 27, 1865.

Figurel, by an elevation, and in Fig. 2 by a central vertical sectional view.

Similar letters refer to like parts in the two The improvement consists of a rotary valve operating in connection with suitable ports, and which is adapted to connect the pipe of an oil-well, which is alternately a blast and an exhaust pipe, with the receptaclecontaining condensed air, with the outer air, and with the vacuum-chamber.

The special object of the device is'to make the requisite connections in a speedy, simple, and economical manner, avoiding unnecessary complication and expense of construction. I use for this purpose a rotary valve having a single passage or port passing through it, and

moving within a seat or casing which has three portsleading to the blast and exhaust tube, and opposite to them three ports which lead respectively to the compressed-air chamber, to the outside open air or exhaust-pipe, and to the vacuum-chamber.

AA are two cylinders, which connect by ports a a with a pump-cylinder, by which the chamber A is supplied with compressed. air, and by which the chamber A is exhausted,

R0. are pipes leading from the chambers A,A and terminating in the valve-seat D. Between their respective terminations or ports is another one, E, which opens into the open air or. to an exhaust-pipe, as may be desired. On the other side of the valveseat, and opposite to the three openings referred to, are three other openings, F G H, which, however, all unite in the pipe I, to proceed to-the oil-well, or other deep well, where the operation I am about to describe may be available.

It may assist in understanding the device to be informed that the pipe I, which proceeds to the well, may be employed to conduct down a column of compressed air, which, impinging upon thcsurface of the oil that is prevented by a lower'valve from flowing back, causes rise in an outer or encircling I the saidoil to tube, where its elevation is maintained by another valve. "I'he column of air being now withdrawn and apartial vacuum secured, the

weight of the atmosphere causes another body of oil to enter at the lower valve, and, being filledto the former extent. it is again in condition to be forced upward by the current of air, as above described.

The valve K is a strong-conical or cylindrical valve, and is revolved by the crank L. It has one port, M, passing through it transverse- 1y to its axis.

The operation is as follows: The cylinderA being filled with compressed air through the port a, and the valve K being in the position represented in Fi g. 2, the com pressed air passes to the well to perform the office above described. To release the pressure, the valve is rotated in the direction of the arrow, and as soon as it has made one-eighth of a revolution the ex haust-port E is opened to allow thevcompressed air in the pipe to flow back and restore the equilibrium. The further rotation ofthe valve brings the pipe 0 in connection with the port M, and by the exhaust-chamber the air in the pipe is withdrawn and a partial vacuum established therein, which has the effect described above of causing oil to flow in through the lower valve-aperture into the pipe at the bottom of the well. The continuance of the rotation with the required rapidity brings the intermittent pressure upon the column of oil in the well-tube and produces the effect desired.

The apparatus may be made to answer for several wells with theproper branch-pipe connection and faucets in the pipes to direct the operation to the required place.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

The rotary valve K, with a through-port, M, rotatingin acasing provided with ports, which gonneet on one side with the chamber of con-. densed air A, with the vacuum-chamber A, and with the exhaust-opening E, and on the other side with corresponding opposite ports, which connect with the well-pipe I, all substantially as and for the purpose described.

To the above specification of my improve ment in valves I have signed my hand this 13th of March, 1805.

.' F. S. PEASE.

Witnesses:

ALEXR. A. (hKLAUoKn, EDWARD H. KNIGHT. 

